How does an allele cause a trait in an organism?
o
a. the allele is a code to form a type of gene.
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b. the allele is used during transcription to make dna.
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c. the allele is used by proteins to create chromosomes.
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d. the allele causes a certain type of protein to form.

D. The allele causes a certain type of protein to form.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.